<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>drag_cross</title>
<style type="text/css">
html, body {
	height: 100%;
}

iframe {
	margin: 5px;
	border: 1px solid #ffeeee;
	width: 300px;
	height: 99%;
}
</style>
</head>
<body>
	<iframe src="drag_cross_item.html"></iframe>
	<iframe src="drag_cross_item.html"></iframe>
</body>
</html>